U.S. patent application number 13/845906 was filed with the patent office on 2013-10-24 for application material extruding container.
The applicant listed for this patent is TOKIWA CORPORATION. Invention is credited to Yoshikazu TANI.
Application Number | 20130279965 13/845906 |
Document ID | / |
Family ID | 47998252 |
Filed Date | 2013-10-24 |
United States Patent
Application |
20130279965 |
Kind Code |
A1 |
TANI; Yoshikazu |
October 24, 2013 |
APPLICATION MATERIAL EXTRUDING CONTAINER
Abstract
An application material extruding container has a filling member
including a filling area filled with an application material, a
piston inward inserted to the filling member in a rear end of the
filling area, and a hole portion arranged in the filling member. A
front end surface of the piston is arranged in front of a rear end
of an opening of the hole portion when the piston is at a backward
moving limit, and a part of the application material is flowed out
of the filling area while passing through the hole portion. When
the piston is assembled in the filling member, the piston is inward
inserted to the filling member while securely discharging an air
between the application material and the piston out of the filling
area via the hole portion, until the application material is flowed
out of the filling area via the hole portion.
Inventors: |
TANI; Yoshikazu;
(Kawaguchi-shi, JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
TOKIWA CORPORATION |
Nakatsugawa-shi |
|
JP |
|
|
Family ID: |
47998252 |
Appl. No.: |
13/845906 |
Filed: |
March 18, 2013 |
Current U.S.
Class: |
401/172 |
Current CPC
Class: |
B65D 83/0005 20130101;
A45D 2200/053 20130101; A45D 2200/055 20130101; A45D 34/04
20130101 |
Class at
Publication: |
401/172 |
International
Class: |
B43K 5/06 20060101
B43K005/06 |
Foreign Application Data
Date |
Code |
Application Number |
Apr 23, 2012 |
JP |
2012-097831 |
Claims
1. An application material extruding container comprising: a
filling member which has a filling area filled with an application
material; an extruding portion which is inward inserted to the
filling member so as to be in close contact with the filling member
and constructs a rear end of said filling area; and the application
material extruding container discharging said application material
from a discharge port in a leading end side of the container on the
basis of a forward movement of said extruding portion, wherein the
application material extruding container comprises a passage
portion which is provided in said filling member and extends so as
to be communicated with an external side of said filling member in
said container from said filling area, and wherein a part of said
application material is flowed out of said filling area through
said passage portion.
2. The application material extruding container according to claim
1, wherein a wall portion is further provided within said
container, and wherein said wall portion covers an opening in an
outer side of said filling area in an opposed side to said filling
area side in said passage portion so that a part of said
application material flowed out of said passage portion is guided
rearward.
3. The application material extruding container according to claim
1, wherein said passage portion includes a hole portion which
passes through inner and outer sides of said filling member.
4. The application material extruding container according to claim
2, wherein said passage portion includes a hole portion which
passes through inner and outer sides of said filling member.
5. The application material extruding container according to claim
1, wherein said passage portion includes a groove portion which is
formed in an inner surface of said filling member and extends so as
to be open to the rear end of the filling member.
6. The application material extruding container according to claim
2, wherein said passage portion includes a groove portion which is
formed in an inner surface of said filling member and extends so as
to be open to the rear end of the filling member.
7. The application material extruding container according to claim
3, wherein said passage portion includes a groove portion which is
formed in an inner surface of said filling member and extends so as
to be open to the rear end of the filling member.
8. The application material extruding container according to claim
4, wherein said passage portion includes a groove portion which is
formed in an inner surface of said filling member and extends so as
to be open to the rear end of the filling member.
9. The application material extruding container according to claim
1, wherein at least a part of said extruding portion is arranged in
front of the rear end of the opening closer to said filling area in
said passage portion, in a state in which said extruding portion is
positioned at a backward moving limit.
10. The application material extruding container according to claim
2, wherein at least a part of said extruding portion is arranged in
front of the rear end of the opening closer to said filling area in
said passage portion, in a state in which said extruding portion is
positioned at a backward moving limit.
11. The application material extruding container according to claim
3, wherein at least a part of said extruding portion is arranged in
front of the rear end of the opening closer to said filling area in
said passage portion, in a state in which said extruding portion is
positioned at a backward moving limit.
12. The application material extruding container according to claim
4, wherein at least a part of said extruding portion is arranged in
front of the rear end of the opening closer to said filling area in
said passage portion, in a state in which said extruding portion is
positioned at a backward moving limit.
13. The application material extruding container according to claim
5, wherein at least a part of said extruding portion is arranged in
front of the rear end of the opening closer to said filling area in
said passage portion, in a state in which said extruding portion is
positioned at a backward moving limit.
14. The application material extruding container according to claim
6, wherein at least a part of said extruding portion is arranged in
front of the rear end of the opening closer to said filling area in
said passage portion, in a state in which said extruding portion is
positioned at a backward moving limit.
15. The application material extruding container according to claim
7, wherein at least a part of said extruding portion is arranged in
front of the rear end of the opening closer to said filling area in
said passage portion, in a state in which said extruding portion is
positioned at a backward moving limit.
16. The application material extruding container according to claim
8, wherein at least a part of said extruding portion is arranged in
front of the rear end of the opening closer to said filling area in
said passage portion, in a state in which said extruding portion is
positioned at a backward moving limit.
17. The application material extruding container according to any
one of claims 1 to 16, wherein a front end of an area coming into
close contact with said filling member in said extruding portion is
arranged forward beyond the opening closer to said filling area in
said passage portion, in a state in which said extruding portion is
positioned at the backward moving limit.
18. The application material extruding container according to claim
17, wherein said application material has a volatile.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to an application material
extruding container which is used by extruding an application
material.
[0003] 2. Description of the Conventional Art
[0004] As a conventional application material extruding container,
for example, a structure described in JP-A-2006-102076 has been
known. The application material extruding container described in
JP-A-2006-102076 is provided with a tubular filling member (a
storage portion) which is formed by setting one end as an opening
portion and setting the other end as an application wall having a
discharge port for an application material, and arranging a concave
groove on an inner peripheral surface in the opening portion side,
and the application material which is filled in a filling area
within the filling member, and an extruding portion (an inner tray)
which comes into close contact with an inner periphery of the
filling member.
SUMMARY OF THE INVENTION
Problem to be Solved by the Invention
[0005] In the application material extruding container as mentioned
above, when the extruding portion is assembled in the filling
member in which the application material is filled, the extruding
portion can be inserted to the filling member while excluding air
between the extruding portion and the application material via the
concave groove, thereby designing to inhibit the air from standing
between the application material and the extruding portion. In this
view point, in the application material extruding container in
recent years, in order to further suppress a risk that the
application material discharges (leaks) in an unintended manner
from the discharge port, for example, due to a temperature change,
it is desired to more securely prevent the air from standing
between the application material and the extruding portion.
[0006] Accordingly, an object of the present invention is to
provide an application material extruding container which more
securely inhibits the air from standing between an application
material and an extruding portion.
Means for Solving the Problem
[0007] In order to achieve the object mentioned above, according to
the present invention, there is provided an application material
extruding container comprising:
[0008] a filling member which has a filling area filled with an
application material;
[0009] an extruding portion which is inward inserted to the filling
member so as to be in close contact with the filling member and
constructs a rear end of the filling area; and
[0010] the application material extruding container discharging the
application material from a discharge port in a leading end side of
the container on the basis of a forward movement of the extruding
portion,
[0011] wherein the application material extruding container
comprises a passage portion which is provided in the filling member
and extends so as to be communicated with an external side of the
filling member in the container from the filling area,
[0012] wherein at least a part of the extruding portion is arranged
in front of a rear end of an opening closer to the filling area in
the passage portion, and
[0013] wherein a part of the application material is flowed out of
the filling area through the passage portion.
[0014] In the application material extruding container, a part of
the application material is flowed out of the filling area through
the passage portion. In other words, when the extruding portion is
assembled in the filling member, the extruding portion is inward
inserted to the filling member while securely discharging the air
between the application material and the extruding portion out of
the filling area via the passage portion, for example, until the
application material is flowed out of the filling area via the
passage portion. Therefore, it is possible to more securely inhibit
the air from standing between the application material and the
extruding portion. As a result, it is possible to prevent the
application material from leaking out of the discharge port by
itself due to the temperature change or the like. For example, it
is possible to make the application material flowed out of the
passage portion serve as a lubricating material for a sliding
portion (for example, a threaded portion) within the container.
[0015] Further, it is preferable that a wall portion is further
provided within the container, and the wall portion covers an
opening in an outer side of the filling area in an opposed side to
the filling area side in the passage portion so that a part of the
application material flowed out of the passage portion is guided
rearward. In this case, it is possible to positively make a part of
the application material flowed out of the passage portion serve as
the lubricating material for the sliding portion or the like which
is arranged in the rear side within the container.
[0016] Further, there is a case that the passage portion includes a
hole portion which passes through inner and outer sides of the
filling member. Further, there is a case that the passage portion
in dudes a groove portion which is formed in an inner surface of
the filling member and extends so as to be open to the rear end of
the filling member.
[0017] Further, it is preferable that at least a part of the
extruding portion is arranged in front of the rear end of the
opening closer to the filling area in the passage portion, in a
state in which the extruding portion is positioned at a backward
moving limit. In this case, when the extruding portion is assembled
in the filling member, it is possible to further securely discharge
the air between the application material and the extruding portion
out of the filling area via the passage portion.
[0018] Further, it is preferable that a front end of an area coming
into close contact with the filling member in the extruding portion
is arranged forward beyond the opening closer to the filling area
in the passage portion, in a state in which the extruding portion
is positioned at the backward moving limit. Accordingly, it is
possible to securely prevent the filling area and the passage
portion from being communicated with each other, and it is possible
to secure an airtightness of the filling area.
[0019] At this time, there is a case that the application material
has a volatile. In this case, the effect of securing the
airtightness of the filling area is particularly effective since a
volatilization of the application material can be preferably
suppressed.
BRIEF EXPLANATION OF THE DRAWINGS
[0020] FIG. 1 is a vertical cross sectional view showing an initial
state of an application material extruding container according to
an embodiment of the present invention;
[0021] FIG. 2 is a vertical cross sectional view showing a state in
which a moving body is at a forward limit in the application
material extruding container in FIG. 1, at a position which is 90
degrees different from a position of the vertical cross section in
FIG. 1;
[0022] FIG. 3 is an exploded perspective view showing the
application material extruding container in FIG. 1 while partially
using a cross section;
[0023] FIG. 4 is a cross sectional view showing a substantial part
in the application material extruding container in FIG. 1 in an
enlarged manner;
[0024] FIG. 5 is a perspective view showing a control tube of the
application material extruding container in FIG. 1 while partially
using a cross section;
[0025] FIG. 6 is the other perspective view showing the control
tube of the application material extruding container in FIG. 1
while partially using a cross section;
[0026] FIG. 7 is a perspective view showing a threaded tube of the
application material extruding container in FIG. 1;
[0027] FIG. 8 is a cross sectional view along a line VIII-VIII in
FIG. 7;
[0028] FIG. 9 is a perspective view showing a latchet member of the
application material extruding container in FIG. 1;
[0029] FIG. 10 is a plan view showing the latchet member of the
application material extruding container in FIG. 1;
[0030] FIG. 11 is an exploded perspective view showing a filling
member of the application material extruding container in FIG.
1;
[0031] FIG. 12A is a front elevational view showing a pen tip
member in the application material extruding container in FIG.
1;
[0032] FIG. 12B is a bottom elevational view showing the pen tip
member in the application material extruding container in FIG.
1;
[0033] FIG. 13A is a cross sectional view for explaining an
assembly of the application material extruding container in FIG.
1;
[0034] FIG. 13B is a cross sectional view showing subsequence of
FIG. 13A;
[0035] FIG. 14A is a cross sectional view showing subsequence of
FIG. 13B;
[0036] FIG. 14B is a cross sectional view showing subsequence of
FIG. 14A;
[0037] FIG. 15 is an X-ray photograph showing a part of the
application material extruding container in FIG. 1; and
[0038] FIG. 16 is a cross sectional view showing a substantial part
of an application material extruding container according to a
modified embodiment in an enlarged manner.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENT
[0039] A description will be in detail given below of a preferable
embodiment according to the present invention with reference to the
accompanying drawings. In the following description, the same
reference numerals are attached to the same or corresponding
elements, and an overlapping description will be omitted.
[0040] FIG. 1 is a vertical cross sectional view showing an initial
state of an application material extruding container according to
an embodiment of the present invention, FIG. 2 is a vertical cross
sectional view showing a state in which a moving body is at a
forward limit in the application material extruding container, FIG.
3 is an exploded perspective view showing the application material
extruding container while partially using a cross section, and FIG.
4 is a cross sectional view showing a substantial part in the
application material extruding container in FIG. 1 in an enlarged
manner. In FIG. 2, there is shown the vertical cross sectional view
at a position which is 90 degrees different from a position of the
vertical cross section in FIG. 1. As shown in FIGS. 1 to 3, an
application material extruding container 100 according to the
present embodiment is structured such that an application material
M filled in an internal portion is appropriately discharged
(extruded) on the basis of an operation of a user.
[0041] The application material M can employ various materials in a
jelly state, a gel state, a paste state, a soft state, a moose
state, a sludge state, a semisolid state, a soft solid state and a
solid state, for example, an eye liner, an eye color, an eye
shadow, an eyebrow, a lip gross, a lip stick, a lip liner, a cheek
color, an essence, a beauty stick, a cleaning fluid, a cleansing
oil, a nail enamel, a nail care liquid solution, a nail remover, a
mascara, an anti-aging, a hair color, a hair application material,
an oral care, a massage oil, a keratotic plug remover, a
foundation, a concealer, a skin cream, an ink for a writing
instrument such as a marking pen, a drug medicine and the like.
Further, by blending a volatile solvent (for example, a silicone
oil such as a cyclopentasiloxane, or a hydrocarbon oil such as an
isododecane and an isohexadecane) in the application material M, in
addition to a pigment, an oil solution and a wax, a long time
lasting property can be enhanced. As an example which is preferable
for the application material M, there can be employed a makeup
cosmetic material, for example, a gel state eye liner, which is
blended with a volatilization component (a volatile solvent) and
has a high long lasting property.
[0042] Further, as the application material M, it is preferable to
employ a material in a gel state or a semisolid state which is high
in a viscosity or a hardness, and is high in a compressibility, and
the application material M having a hardness between about 0.1 N
and about 0.3 N can be particularly preferably employed. The
hardness of the application material M is determined according to a
general measuring method which is used for measuring a hardness in
a cosmetic material. Here, a hardness (a penetration) is defined by
a peak force (a strength) which is generated in the application
material M, for example, in the case of using FUDOH RHEO METER
[RTC-2002D.D] (manufactured by RHEOTECH), and inserting a steel rod
(an adapter) having a diameter 0 mm at about 10 mm to the
application material M at a speed of 6 cm/min under a condition of
an atmospheric temperature 25.degree. C.
[0043] The application material extruding container 100 is provided
with a filling member 1 corresponding to a leading tube having in
its inner portion a filling area 1x in which the application
material M is filled, a main body tube 2 inward inserting a rear
half portion of the filling member 1 to a front half portion
thereof so as to engage the filling member 1 in an axial direction
(back and forth direction) and a rotating direction around an axis
(hereinafter, refer simply to as "rotating direction") and
integrally couple the filling member 1, and a control tube 3
coupled to a rear end portion of the main body tube 2 in an axial
direction so as to be relatively rotatable, as an outer structure.
Here, the filling member 1 and the main body tube 2 construct a
front portion of the container, and the control tube 3 constructs a
rear portion of the container. Further, the term "axis" means a
center line G which extends back and forth in the application
material extruding container 100, and the term "axial direction"
means a direction which is along the axis (and so forth). Further,
a feeding direction of the application material M in a side of a
pen tip member 12 mentioned later in the axial direction is assumed
to be a forward side (a forward moving direction), and a feedback
direction of the application material M in a side of the control
tube 3 in the axial direction is assumed to be a backward side (a
backward moving direction).
[0044] Further, the application material extruding container 100 is
approximately provided in an inner portion thereof with a moving
body 6 which moves in the axial direction on the basis of a
relative rotation of the main body tube 2 (or the filling member 1)
and the control tube 3, a piston 7 which is installed to a front
end (a leading end) of the moving body 6, is inward inserted to the
filling member 1 so as to come into close contact with the filling
member 1 and serves as an extruding portion constructing (forming)
a rear end of the filling area 1x, a thread tube 4 which serves as
a threaded member allowing movement of the moving body 6 on the
basis of the relative rotation, and a ratchet member 5 which can
relatively rotate only in one direction in relation to the threaded
tube 4.
[0045] Further, the application material extruding container 100 is
provided with a ratchet mechanism 8 which allows a relative
rotation of the main body tube 2 and the control tube 3 only in one
direction, and a cam mechanism 20 which moves the moving body 6 and
the piston 7 forward and backward within a fixed stroke per a fixed
rotating amount of relative rotation between the main body tube 2
and the control tube 3. The corn mechanism 20 here is a cylinder
cam mechanism including a protruding portion 20a and a guide
portion 20b, and moves the moving body 6 and the piston 7 forward
and backward at a fixed stroke on the basis of the rotating force
of the relative rotation between the main body tube 2 and the
control tube 3.
[0046] The main body tube 2 is constructed as a cylindrical shape,
and has on an inner peripheral surface of a center portion in an
axial direction, knurls 2a which are provided side by side with a
lot of concavo-convex portions in a peripheral direction and are
structured such that the concave-convex portions extend at a
predetermined length in the axial direction, for engaging the
filling member 1 and the threaded tube 4 in the rotating direction.
Further, an inner peripheral surface of a leading end portion of
the main body tube 2 is provided with an annular protruding portion
2b for engaging the filling member 1 in the axial direction. A
protruding portion 2c extending in a peripheral direction is formed
in an inner peripheral surface in a rear side of the main body tube
2 for engaging the control tube 3 in the axial direction.
[0047] Further, a protruding portion 2d extending along the
peripheral direction is formed in a front side of the protruding
portion 2c in the inner peripheral surface of the main body tube 2
for engaging the threaded tube 4 in the axial direction. Further,
as shown in FIG. 4, the inner peripheral surface of the main body
tube 2 constructs a wall portion (a second wall portion) 2x which
covers an opening 10.sub.out in an opposite side (an outer side of
the filling area 1x) to the filling area 1x side in a hole portion
10f of an outer filling tube 10 mentioned later with a gap. The
wall portion 2x has a function of rearward guiding a part of the
application material M flowing out of the hole portion 10f.
[0048] FIGS. 5 and 6 are perspective views showing a part of the
control tube by partially using a cross section. As shown in FIGS.
5 and 6, the control tube 3 is formed as an injection molded
product by a resin, and is formed as a closed-end cylindrical shape
which is open forward. The control tube 3 is provided in its front
end side with a front end tube portion 3a which has a small outer
diameter, and an outer peripheral surface of the front end tube
portion 3a is provided with an annular groove portion 3b for
engaging with the protruding portion 2c of the main body tube 2 in
the axial direction. Further, a shaft body 3c is provided in a
rising manner in the center of a bottom portion of the control tube
3. The shaft body 3c is formed as a noncircular shape in a
transverse cross section (a cross section which is orthogonal to
the axial direction) having a plurality of protruding ridges 3d
extending in the axial direction on an outer peripheral surface of
a columnar body, and the protruding ridges 3d construct one of a
rotation preventing portion of the moving body 6.
[0049] Further, the control tube 3 is provided in an inner
peripheral surface with protruding ridges 3e which extend from the
bottom portion toward a leading end side, at eight uniformly
arranged positions in a peripheral direction. A leading end surface
3f of the protruding ridge 3e is inclined in relation to a
transverse cross section corresponding to an orthogonal surface in
the axial direction (hereinafter, refer simply to as "transverse
cross section"). Specifically, the leading surface 3f is inclined
rearward toward one side in the peripheral direction in a
diametrical direction view. In other words, the leading end surface
3f is inclined rearward toward a relative rotating direction which
is allowed by the ratchet mechanism 8 (hereinafter, refer to as
"allowed rotating direction"), and is formed appropriately in
parallel to a rear end surface 5f of a vertical rib 5e mentioned
later.
[0050] Further, an O-ring groove 3g extending annularly is provided
in a rear end on an outer peripheral surface of the front end tube
portion 3a of the control tube 3 for installing an O-ring R1. The
O-ring R1 is provided for applying an appropriate rotary resistance
at a time of the relative rotation between the main body tube 2 and
the control tube 3, and serves as an annular elastic body which
generates a predetermined rotary resistance force in the relative
rotation.
[0051] Further, the control tube 3 has a pair of (a plurality of)
protruding portions 20a constructing one of the cam mechanism 20,
in a front end portion on an inner peripheral surface thereof. The
protruding portion 20a is guided by the guide portion 20b while
relatively sliding with the guide portion 20b. Accordingly, the
protruding portion 20a serves as a driver for transmitting a
rotating force at a time when a user relatively rotates the main
body tube 2 and the control tube 3 to the guide portion 20b on the
basis of a sliding operation.
[0052] The protruding portions 20a are provided at two uniformly
arranged positions in the peripheral direction and protrude at a
predetermined length to an inner side in the diametrical direction.
Specifically, an area from the center of the front end tube portion
3a to the front end is expanded in the inner peripheral surface of
the control tube 3 so as to be formed as a large-diameter inner
peripheral surface 3i, and a pair of protruding portions 20a having
a fixed height are formed so as to be opposed to a front end of the
large-diameter inner peripheral surface 3i with each other.
Further, a hole portion 3h penetrating in a diametrical direction
is formed in an area which is connected to the rear side of the
protruding portion 20a in the large-diameter inner peripheral
surface 3i, for forming the protruding portion 20a. The hole
portion 3h is formed as a rectangular shape having an equal width
in the peripheral direction to the protruding portion 20a as seen
from a diametrical direction.
[0053] As shown in FIGS. 1 and 5, the control tube 3 is inward
inserted to the main body tube 2 from the front end tube portion
3a, and the annular groove portion 3b engages with the protruding
portion 2c of the main body tube 2, thereby being coupled and
installed to the main body tube 2 in the axial direction so as to
be relatively rotatable. At this time, the O-ring R1 is fitted to
the O-ring groove 3g of the control tube 3, whereby an appropriate
rotary resistance is applied to the relative rotation between the
main body tube 2 and the control tube 3. There is a case that the
O-ring R1 (and the O-ring groove 3g) are not provided for reducing
a production cost.
[0054] The control tube 3 mentioned above can be resin molded by
using a metal mold or a core pin. Since the control tube 3 has a
hole portion 3h, the protruding portion 20a can be preferably
formed by utilizing a convex portion for forming the hole portion
3h in the metal mold. For example, when a slide core and a core pin
in the metal mold are assembled with each other, a predetermined
space corresponding to the protruding portion 20a can be defined in
such a manner as to be pinched in a vertical direction to the axial
direction, by a convex portion of the slide core and the core pin.
As a result, when the core pin is detached after the molding (that
is, after a molten resin is filled and solidified in the
predetermined space and the protruding portion 20a is formed), an
undercut portion formed in a rear side of the protruding portion
20a is released by sliding the convex portion of the slide core in
the vertical direction to the axis, whereby the core pin can be
easily drawn out in the axial direction.
[0055] FIG. 7 is a perspective view showing the threaded tube, and
FIG. 8 is a cross sectional view along a line VIII-VIII in FIG. 7.
As shown in FIGS. 7 and 8, the threaded tube 4 is formed as an
injection molded product by the resin, and is formed as a stepped
cylindrical outer shape. The threaded tube 4 has a front end tube
portion 4x, a center tube portion 4y which has an outer shape with
larger diameter than the front end tube portion 4x, and a rear end
tube portion 4z which has an outer shape with smaller diameter than
the center tube portion 4y in this order from a front side to a
rear side. On the other hand, an inner peripheral surface of the
threaded tube 4 extends straight along the axial direction with no
step.
[0056] The front end tube portion 4x constructs a front end portion
of the threaded tube 4, and is provided in an inner peripheral
surface with a female thread 4e which constructs one of the
threaded portion (the extruding mechanism) 9. A pitch of the
threaded portion 9 here employs a narrow pitch, and is set, for
example, to 0.5 mm. A front end portion on an outer peripheral
surface of the front end tube portion 4x is provided with a collar
portion 4a for preventing an inner diameter of the female thread 4e
from being expanded so as to be in close contact with the filling
member 1 (refer to FIG. 1).
[0057] The center tube portion 4y constructs the center portion of
the threaded tube 4 and the front end side of the center portion,
and protruding ridges 4c for engaging with the knurl 2a of the main
body tube 2 in the rotating direction are formed at a plurality of
positions in a peripheral direction on an outer peripheral surface
thereof. Further, an annular convex portion 4d for engaging with
the protruding portion 2d of the main body tube 2 in the axial
direction is formed on an outer peripheral surface of a rear end
portion of the center tube portion 4y. Further, a pair of slits 4f
penetrating in the diametrical direction and extending at a
predetermined length in the axial direction are formed in the front
end tube portion 4x and the front end portion of the center tube
portion 4y so as to be opposed.
[0058] The rear end tube portion 4z constructs a rear end portion
and a rear end side of the center portion of the threaded tube 4,
and a plurality of ratchet teeth 8a engaging with the ratchet
member 5 are provided in the rear end surface 4b along a peripheral
direction, so as to construct the ratchet mechanism 8. The ratchet
teeth 8a here are provided in a protruding manner at four uniformly
arranged positions in the peripheral direction on the rear end
surface 4b.
[0059] The ratchet teeth 8a protrude out of the rear end surface 4b
while forming a saw-tooth shape (a wedge shape) along the
peripheral direction. Specifically, a side surface 8a1 in the other
side (a contact side with the ratchet teeth 8a at a time of
relatively rotating the main body tube 2 and the control tube 3 in
one direction) in the peripheral direction in the ratchet teeth 8a
is inclined in relation to the rear end surface 4b so as to form a
chevron form in the peripheral direction. On the other hand, a side
surface 8a2 in one side (a contact side with the ratchet teeth 8a
at a time of relatively rotating the main body tube 2 and the
control tube 3 in the other direction) in the peripheral direction
in the ratchet teeth 8b extends along the axial direction while
being orthogonal to the rear end surface 4b.
[0060] Further, the rear end tube portion 4z has the guide portion
20b which constructs the other of the cam mechanism 20. The guide
portion 20b guides a sliding motion of the protruding portion 20a
while relatively sliding the protruding portion 20a of the control
tube 3. The guide portion 20b serves as a follower to which the
rotating force of the main body tube 2 and the control tube 3 is
transmitted as a linear moving force in the back and forth
direction on the basis of the sliding motion from the protruding
portion 20a. A front side of the guide portion 20b is defined by a
bulge portion 20c which bulges in relation to an outer peripheral
surface of the rear end tube portion 4z, and a rear side of the
guide portion 20b is defined by a plurality of guide pieces 20d
serving as projections which protrude in relation to the outer
peripheral surface of the rear end tube portion 4z.
[0061] The bulge portion 20c is provided in a front end portion of
the rear end tube portion 4z in such a manner as to bulge at a
predetermined length to an outer side in a diametrical direction. A
rear surface of the bulge portion 20c is formed as a saw-tooth
shape (a wedge shape) along the peripheral direction. Further, a
rear surface of the bulge portion 20c is constructed while
including a guide surface 20e which is inclined (intersects) in
relation to the transverse cross section, as a sliding element with
the protruding portion 20a.
[0062] A plurality of guide pieces 20d are provided in a rear end
portion of the rear end tube portion 4z so as to protrude at a
predetermined length to an outer side in the diametrical direction.
The guide pieces 20d are arranged so as to be spaced only at a
distance corresponding to the fixed stroke, in a rear side of the
bulge portion 20c. Further, a plurality of guide pieces 20d are
arranged side by side along the peripheral direction so as to be
spaced at a wider gap than a peripheral width of the protruding
portion 20a. The guide pieces 20d here are provided at eight
uniformly arranged positions in the peripheral direction.
[0063] As shown in FIGS. 1 and 7, the threaded tube 4 is inward
inserted to the main body tube 2, the annular convex portion 4d
engages with the protruding portion 2d of the main body tube 2 so
as to be movable in the axial direction, and the protruding ridge
4c engages with the knurl 2a of the main body tube 2 in the
rotating direction. Further, the threaded tube 4 is inward inserted
its rear end tube portion 4z into the control tube 3. Accordingly,
the threaded tube 4 is engaged with the main body tube 2 in the
rotating direction, is installed to the main body tube 2 so as to
be synchronously rotatable, and is movable in the axial direction
between the protruding portion 2d of the main body tube 2 and the
front end surface of the control tube 3. At this time, the
protruding portion 20a of the control tube 3 is moved forward along
the axial direction from a gap D between a plurality of guide
pieces 20d in the guide portion 20b into the guide portion 20b,
whereby the protruding portion 20a is assembled in the guide
portion 20b and the cam mechanism 20 is formed.
[0064] The threaded tube 4 mentioned above can be resin molded by
using the slide core and the core pin of the metal mold. Here, a
four-direction slide core type metal mold which can be separated
into four pieces in a peripheral direction is used. Accordingly, it
is possible to form an undercut shape of the guide pieces which are
provided at eight uniformly arranged positions in the peripheral
direction with an unforced manner.
[0065] FIG. 9 is a perspective view showing the ratchet member, and
FIG. 10 is a plan view showing the ratchet member. As shown in
FIGS. 9 and 10, the ratchet member 5 is formed as an injection
molded product by a resin, and is constructed approximately as a
cylindrical shape. A front end surface of the ratchet member 5 is
provided with a plurality of ratchet teeth 8b engaging with the
ratchet teeth 8a of the threaded tube 4 along a peripheral
direction, as an element constructing the ratchet mechanism 8. The
ratchet teeth 8b here are provided in a protruding manner at eight
uniformly arranged positions in the peripheral direction in the
front end surface of the ratchet member 5.
[0066] The ratchet teeth 8b protrude out of the front end surface
while forming the saw-tooth shape (the wedge shape) along the
peripheral direction. Specifically, a side surface 8b1 in one side
(a contact side with the side surface 8a1 of the ratchet teeth 8a
at a time of relatively rotating the main body tube 2 and the
control tube 3 in one direction) in the peripheral direction in the
ratchet teeth 8b is inclined in relation to the front end surface
so as to form a chevron form in the peripheral direction. On the
other hand, a side surface 8b2 in the other side (a contact side
with the side surface 8a2 of the ratchet teeth 8a at a time of
relatively rotating the main body tube 2 and the control tube 3 in
the other direction) in the peripheral direction in the ratchet
teeth 8b extends along the axial direction while being orthogonal
to the front end surface.
[0067] An approximately spiral slit 5a is formed in a portion from
a center portion to a rear end in a peripheral wall of the ratchet
member 5. Accordingly, the ratchet member 5 serves as a spring
portion 5b which energizes the ratchet teeth 8b toward a forward
direction corresponding to the ratchet teeth 8a side. Further,
vertical ribs 5e extending in an axial direction while having a
predetermined width in the peripheral direction are provided in a
front end portion of an outer peripheral surface of the ratchet
member 5 for engaging with the protruding ridge 3e of the control
tube 3 in a rotating direction.
[0068] The vertical ribs 5e are provided at eight uniformly
arranged positions in the peripheral direction in the front end
portion of the outer peripheral surface of the ratchet member 5. A
rear end surface 5f of the vertical rib 5e is inclined forward in
relation to the transverse cross section toward the other side in
the peripheral direction in a diametrical view. In other words, the
rear end surface 5f is inclined forward toward an allowable
rotating direction of the ratchet member 5, and is approximately in
parallel to the leading end surface 3f of the protruding ridge 3e
of the control tube 3.
[0069] As shown in FIGS. 1 and 9, the ratchet member 5 is inward
inserted to the control tube 3 from a rear side thereof, the
vertical rib 5e thereof moves forward into a portion between the
protruding ridges 3e and 3e of the control tube 3, and the vertical
rib 5e is engaged with the protruding ridge 3e in the rotating
direction. In conjunction with this, the ratchet member 5 is
brought into contact with the rear end side of the threaded tube 4,
and the ratchet teeth 8b can be engaged with the ratchet teeth 8a
of the threaded tube 4. Accordingly, the ratchet member 5 is
assembled in the control tube 3 in a state in which a relative
rotation is controlled so that the ratchet member 5 can relatively
rotate only in the allowable rotating direction in relation to the
threaded tube 4 by the ratchet teeth 8a and 8b.
[0070] Further, the ratchet member 5 is pinched in the axial
direction by the rear end side of the threaded tube 4 and the
bottom surface of the control tube 3, and an energizing force (an
elastic force) is generated by the spring portion 5b, whereby the
ratchet teeth 8b are energized in a forward side. Accordingly, the
ratchet teeth 8a and 8b engaging with each other are set to a clock
engaged state.
[0071] When the vertical ribs 5e are moved forward between the
protruding ridges 3e and 3e for engaging with the protruding ridges
3e in the rotating direction, the positions thereof in the rotating
direction may be deviated from each other, and the rear end
surfaces 5f of the vertical ribs 5e and the leading end surfaces 3f
of the protruding ridges 3e may be brought into contact with each
other. In this case, since the rear end surfaces 5f and the leading
end surfaces 3f are formed as the inclined surfaces mentioned
above, the relative rotation of the ratchet member 5 in the
allowable rotating direction is promoted, and the relative rotation
of the ratchet member 5 in the opposite side to the allowable
rotating direction is controlled. Accordingly, in this case, the
ratchet member 5 is relatively rotated in the allowable rotating
direction, and the vertical ribs 5e move forward between the
protruding ridges 3e and 3e while being moved in the allowable
rotating direction in relation to the protruding ridges 3e. As a
result, it is possible to inhibit the ratchet member 5 from being
forcibly rotated relatively in the opposite side to the allowable
rotating direction for engaging the vertical ribs 5e with the
protruding ridges 3e. Further, it is possible to inhibit the
ratchet teeth 8a and 8b and the other rotary engaging portions from
being broken for the forcible relative rotation.
[0072] Turning back to FIG. 1, the moving body 6 is constructed as
a cylindrical shape, and is provided with a male thread 6b which
constructs the other of the threaded portion 9, on an outer
peripheral surface from a rear side of its front end portion toward
a rear end portion. Further, protruding ridges 6c protruding to an
inner side in a diametrical direction and extending in an axial
direction are provided at six uniformly arranged positions in a
peripheral direction on an inner peripheral surface of the moving
body 6, for constructing the other of the rotation preventing
portion of the moving body 6. The moving body 6 is outward inserted
to the shaft body 3c of the control tube 3 and is inward inserted
to the threaded tube 4, and the male thread 6b thereof is
threadably engaged with the female thread 4e of the threaded tube
4. In conjunction with this, the moving body 6 is engaged with and
installed to the control tube 3 in the rotating direction so as to
be movable in the axial direction, in a state in which the
protruding ridges 6c thereof engage between the protruding ridges
3d and 3d (refer to FIG. 5) of the shaft body 3c.
[0073] The piston 7 is formed by a polyester elastomer (TPEE), a
polyurethane elastomer (TPU), a polypropylene (PP), a high density
polyethylene (HDPE) or a linear low density polyethylene (LLDPE),
which has a different color tone (for example, a white color) from
a color tone of the application material M. The piston 7 is formed
as an approximately cylindrical shape in its outer shape, is formed
as a flat surface shape which is orthogonal in an axial direction
in its front end surface, and is provided in a depressing manner
with a concave portion in its rear end surface. In other words, the
piston 7 has a horseshoe shape which is formed flat in its front
surface, and is open rearward in a vertical cross sectional view.
An inner peripheral surface of the concave portion is provided with
an annular protruding portion 7b which engages with the moving body
6 so as to be movable at a predetermined length in the axial
direction.
[0074] Further, an outer peripheral surface of the piston 7 is
provided with a convex portion 7c which comes into contact (close
contact) with the filling member 1 so as to make the filling area
1x airtight, as an area which is closely attached to the filling
member 1, as shown in FIG. 4. The piston 7 as mentioned above is
outward inserted to a front end portion of the moving body 6, and
the annular protruding portion 7b engages with the moving body 6 in
the axial direction, thereby being installed to the moving body 6
so as to be movable in the axial direction (movable within a
predetermined range).
[0075] FIG. 11 is an exploded perspective view showing the filling
member. As shown in FIGS. 1 and 11, the filling member 1 is formed
by an injection molding plastic, for example, a polyethylene
terephthalate (PET), a polybutylene terephthalate (PBT), a
polycyclohexane dimethylene terephthalate (PCTA) or a polypropylene
(PP), which is excellent in a permeability resistance against the
volatile solvent, and is constructed by including the outer filling
tube 10 which constructs an outer periphery, an inner filling tube
11 which defines the filling area 1x in an inner side of the outer
filling tube 10, and the pen tip member which constructs a leading
end portion of the filling member 1 for applying the application
material M.
[0076] As shown in FIG. 11, the outer filling tube 10 is formed by
a colored material (for example, black), and has a cylindrical main
body portion 103 and a taper portion 10b which is continuously
provided in a front side of the main body portion 103. The main
body portion 10a has an annular concave portion 10c which engages
with the annular protruding portion 2b of the main body tube 2 in
an axial direction, at the center in the axial direction on its
outer peripheral surface. Further, the main body portion 10a is
provided with an annular collar portion 10d which comes into
contact with a front end surface of the main body tube 2, in a
front side of the annular concave portion 10c in its outer
peripheral surface. A rear end portion on the outer peripheral
surface of the main body portion 10a is provided with knurls 10e
which are provided with a lot of concavo-convex portions side by
side in a peripheral direction and are structured such that the
concavo-convex portions extend in the axial direction at a
predetermined length, as an engaging element with the knurls 2a of
the main body tube 2 in the rotating direction.
[0077] Further, the main body portion 10a has hole portions 10f as
a passage portion (a second passage portion) which communicates air
and a part of the application material M, and an element for
confirming a filling position of the application material M and
engaging the inner filling tube 11. The hole portion 10f is formed
as a rectangular cross sectional shape, and a pair of hole portions
10f are formed at opposed positions to each other on a peripheral
wall in a rear end portion of the main body portion 10a. The hole
portions 10f extend in a diametrical direction so as to pass
through inner and outer sides of the peripheral wall. As shown in
FIGS. 4 and 11, the rear end portion on the inner peripheral
surface of the main body portion 102 has an enlarged portion which
is formed so that an inner diameter is expanded. The enlarged
portion constructs a wall portion (a first wall portion) 10x which
covers an opening 11.sub.out in an opposite side (an outer side of
the filling area 1x) to the filling area 1x side in a hole portion
11e of the inner filling tube 11 mentioned later, with a gap. The
wall portion 10x has a function of guiding a part of the
application material M flowing out of the hole portion 11e
rearward.
[0078] The taper portion 10b takes on a tapered frustum tubular
shape, and is formed as a flat circular shape in its transverse
outer shape. An opening 10g (refer to FIG. 1) having a flat
circular cross sectional shape is formed in a front end portion of
the taper portion 10b. Further, an O-ring groove 10h (refer to FIG.
1) extending annularly is provided in a front side of the collar
portion 10d on an outer peripheral surface of the main body portion
10a, and an O-ring R2 is fitted and installed to the O-ring groove
10h, the O-ring R2 serving as an annular elastic body for enhancing
an airtightness and a fitting stability within a cap C1 mentioned
later.
[0079] The inner filling tube 11 is formed by a transparent
material, and has a light transmitting property that the
application material M in the filling area 1x in its inner portion
can be seen through. The inner filling tube 11 has a cylindrical
main body portion 11a, a taper portion 11b which is continuously
provided in a front side of the main body portion 11a, and a front
end portion lid which is continuously provided in a front side of
the taper portion 11b via a step.
[0080] The main body portion 11a has hole portions 11e as a passage
portion (a first passage portion) which communicates the air within
the filling area 1x and a part of the application material M with
an outer side of the filling area 1x. A pair of hole portions 11e
are formed at mutually opposed positions on a peripheral wall in a
rear end portion of the main body portion 11a, and extend in a
diametrical direction so as to pass through inner and outer sides
of the peripheral wall. Further, the hole portions 11e are arranged
at the same positions as the hole portions 10f in the peripheral
direction. The hole portion 11e is formed as an oval cross
sectional shape which is longer in the axial direction, that is, as
a track cross sectional shape which extends at a predetermined
length in the axial direction. A rear side of the hole portion 11e
on the outer peripheral surface of the main body portion 11a is
provided with a convex portion 11f which engages with the hole
portion 10f of the outer filling tube 10 in the axial
direction.
[0081] The taper portion 11b takes on a tapered frustum tubular
shape which is formed as a flat circular shape in its transverse
outer shape. The front end portion 11d takes on a tubular shape
which is formed as a flat circular shape in its transverse outer
shape. As shown in FIG. 1, the inner filling tube 11 is inward
inserted and installed to the outer filling tube 10. At this time,
a gap 11h is formed between a front end of the inner filling tube
11 and the outer filling tube 10, and the gap 11h constructs an
engaging groove for engaging a plug C2 mentioned later.
[0082] FIG. 12A is a front elevational view showing the pen tip
member in the application material extruding container in FIG. 1,
and FIG. 12B is a bottom elevational view showing the pen tip
member in the application material extruding container in FIG. 1.
As shown in FIG. 12, the pen tip member 12 is provided for applying
the application material M, and is formed by a soft material. As
the soft material, for example, there can be employed a general
thermosetting rubber which is heated by vulcanization so as to be
molded, and a thermoplastic elastomer which is one kind of plastics
and is molded by being thermally plasticized and being poured into
a metal mold.
[0083] As the general rubber, there can be mainly listed up a
nitrile rubber (NBR), a butyl rubber (IIR), an ethylene propylene
rubber (EPDM), and a silicone rubber (Si). Among them, the nitrile
rubber is particularly excellent in an oil resistance against the
volatile solvent mentioned above. Further, as the thermoplastic
elastomer, there can be mainly listed up a polyester elastomer
(TREE), an olefin elastomer (TPO), and an urethane elastomer (TPU).
Among them, the urethane elastomer can employ any of two kinds
which has a polyurethane as a hard segment and a polyester type and
a polyether type as a soft segment, and the polyether type in the
soft segment is particularly suitable for the application material
M.
[0084] Further, in the pen tip member 12, a hardness by a type A
durometer defined by JIS K 6253 is preferably set between 40 and
80. As the pen tip member 12, every application portions such as a
soft pen tip and the like can be used. As illustrated, the pen tip
member 12 includes a sharp pen tip 13 in a leading end side, and a
base end portion 16 which is continuously provided via a step
portion 14, in a base end side of the pen tip 13.
[0085] The pen tip 13 has a flat circular shape in its transverse
outer shape, and is formed as a blade shape in a side view. The
flat circle in the transverse outer shape is set such that a
vertical direction in FIG. 12A is a direction of long axis, and a
vertical direction in FIG. 12B is a direction of short axis. In the
pen tip 13, an application surface S brought into contact with an
applied subject such as a skin of the user is constructed by a
leading end surface. The application surface S is formed as a flat
circular curved surface which bulges to a front side and is
elongated back and forth, and a peak P is formed in a leading
end.
[0086] Further, a taper surface 17 inclined so as to be tapered to
the application surface S side is formed in an area in a base end
side at a predetermined length from an outer edge of the
application surface S on both side surfaces of the pen tip 13. A
through hole 18 which extends along an axial direction and has a
circular cross sectional shape is formed at an axial position of
the pen tip 13. An opening portion of the application surface S in
the through hole 18 forms a discharge port 18a for discharging the
application material M.
[0087] The base end portion 16 takes on a flat circular tubular
shape which has a larger diameter than the pen tip 13 in its
transverse outer shape. A taper surface 19 inclined so as to be
tapered is formed as an engaging element with the taper portion 10b
of the outer filling tube 10, in an area from a front end to a
center on an outer peripheral surface of the base end portion
16.
[0088] As shown in FIGS. 1, 11 and 12, the base end portion 16 of
the pen tip member 12 is outward inserted to the front end portion
11d of the inner filling tube 11, and the pen tip member 12 is
engaged with the inner filling tube 11 in the rotating direction so
as to be closely attached. In this state, the pen tip member 12 is
inward inserted its pen tip 13 to the opening 10g of the outer
filling tube 10, and is engaged with the outer filling tube 10 in
the rotating direction so as to be installed. In other words, the
outer filling tube 10, the inner filling tube 11 and the pen tip
member 12 are installed to each other as the filling member 1, by
assembling the pen tip member 12 in the inner filling tube 11, and
assembling it in the outer filling tube 10. Further, the pen tip
member 12 is engaged its step portion 14 with the front end portion
of the outer filling tube 10 in the axial direction, and is engaged
its rear end surface of the base end portion 16 with the inner
filling tube 11 in the axial direction, thereby being pinched and
retained in the axial direction by the outer filling tube 10 and
the inner filling tube 11.
[0089] Further, the filling member 1 is inward inserted to the main
body tube 2 from its rear portion side, the annular concave portion
10c of the outer filling tube 10 is engaged with the annular
protruding portion 2b of the main body tube 2, and the knurl 10e of
the outer filling tube 10 is engaged with the knurl 2a of the main
body tube 2. Accordingly, the filling member 1 is engaged with and
installed to the main body tube 2 in the axial direction and the
rotating direction, and is integrated with the main body tube 2. In
conjunction with this, as in detail described below, in the filling
member 1 in which the application material M is filled, the piston
7 is inward inserted and installed to the rear end portion of the
inner filling tube 11 so as to be closely attached in an airtight
manner.
[0090] Further, the plug C2 is fitted and inserted to the discharge
port 18a of the pen tip member 12 in the filling member 1 so as to
be detachably mounted. Accordingly, the filling area 1x is
hermetically sealed (sealed in an airtight manner). Further, the
cap C1 is threadably fitted (detachably mounted) to the outer
filling tube 10 of the filling member 1 via the O-ring R2.
Accordingly, an inner side of the cap C1 is set to an airtight
state. In this case, the threaded tube 4 is inward inserted so that
the collar portion 4a (refer to FIG. 7) of the threaded tube 4
comes close to an inner surface of the outer filling tube 10 in the
filling member 1, thereby inhibiting an inner diameter of the
female thread 4e from being expanded. Further, the volatilization
of the application material M can be further suppressed by
attaching the cylindrical cap into the cap C1 so as to reduce a
space within the cap C1.
[0091] Next, a description will be given in detail of an example of
an assembly in the filling member 1 mentioned above.
[0092] FIGS. 13 and 14 are vertical cross sectional views for
describing the assembly after filling the application material in
the application material extruding container. When assembling the
filling member 1, first of all, the application material M is
filled in the filling area 1x of the filling member 1 (an
application material filling step). Specifically, the plug C2
serving as a leading end seal part is inserted from the discharge
port 18a to the leading end portion of the inner filling tube 11,
thereby occluding the discharge port 18a while setting the plug C2
and the filling member 1 in a closely attached state or in a state
having a clearance.
[0093] Subsequently, the filling member is set to a rising posture
in which the pen tip member 12 is positioned downward, the
application material M which is raised up to a temperature about
80.degree. C. so as to be molten is filled in the inner filling
tube 11 from the rear side of the inner filling tube 11, and the
filling operation of the application material M is carried out to a
fixed amount. For example, as shown in FIG. 13A, the filling
operation of the application material M is carried out until the
application material M reaches a partway (a center in this case) of
an opening 11.sub.in of the hole portion 11e in the axial
direction. In other words, the application material M is filled
until a surface of the application material M is positioned between
a front end (a front end edge) E.sub.F and a rear end (a rear end
edge) E.sub.R of the opening 11.sub.in in the filling area 1x side
which comes to an inner side in the diametrical direction in the
hole portion 11e. Further, the application material M is cooled by
leaving for a predetermined cooling time.
[0094] Subsequently, the piston 7 is moved forward from the rear
side of the inner filling tube 11, and the piston 7 is inward
inserted and installed to the inner filling tube 11 so that the
convex portion 7c of the piston 7 comes into contact with the inner
peripheral surface of the inner filling tube 11 (an extruding
portion installing step).
[0095] Here, as shown in FIG. 13B, after the front end surface of
the piston 7 comes to the rear end E.sub.R of the opening 11.sub.in
in the hole portion 11e, the air A between the application material
M and the piston 7 is positively extruded out of the filling area
1x via the hole portion 11e. In other words, from the time when the
front end of the piston 7 is arranged in front of the rear end
E.sub.R of the opening 11.sub.in, the aft A between the application
material M and the piston 7 is positively flowed (exhausted) out of
the filling area 1x through the hole portion 11e. Further, for
example, at least a part of the air A passing through the hole
portion 11e is guided to the wall portion 10x so as to flow
rearward between the inner filling tube 11 and the outer filling
tube 10, and is positively flowed out of the filling member 1
further through the hole portion 10f.
[0096] Further, as shown in FIG. 14A, after the front end surface
of the piston 7 reaches the partway of the opening 11.sub.in in the
axial direction, and the piston 7 comes into contact with the
application material M, the application material M is positively
extruded out of the filling area 1x via the hole portion 11e. In
other words, from the time when the air A does not stand between
the application material M and the piston 7, the application
material M is positively flowed out of the filling area 1x through
the hole portion 11e. Further, for example, the application
material M passing through the hole portion 11e is guided by the
wall portion 10x so as to flow rearward between the inner filling
tube 11 and the outer filling tube 10.
[0097] A part of the application material M flowing rearward flows
into the threaded tube 4 via the slit 4f (refer to FIG. 7) of the
threaded tube 4, and reaches the threaded portion 9, and the other
portion of the application material M is positively flowed out of
the filling member 1 further through the hole portion 10f. The
application material M passing through the hole portion 10f is
guided by the wall portion 2x so as to flow rearward between the
outer filling tube 10 and the main body tube 2, and a part of the
application material M flows into the threaded tube 4 via the slit
4f of the threaded tube 4 and reaches the threaded portion 9.
[0098] Further, after the convex portion 7c of the piston 7 is
arranged forward beyond the opening 11.sub.in and the convex
portion 7c comes into contact with and is closely attached to the
front side of the opening 11.sub.in in the inner peripheral surface
of the inner filling tube 11, the filling area 1x and the hole
portion 11x are not communicated with each other. Accordingly, the
rear end portion of the filling area 1x is set to a further
airtight state.
[0099] As mentioned above, as shown in FIG. 14B, when the
installation of the piston 7 is finished, and the piston 7 is
positioned at a backward moving limit (a most rearward position in
the movable range) as an initial state, a part of the application
material M is flowed out of the filling area 1x through the hole
portion 11e. Here, a part of the application material M exists at
least in the hole portions 11e and 10f, between the filling tubes
10 and 11, between the main body tube 2 and the filling member 1,
and in the threaded portion 9, within the container.
[0100] As mentioned above, in the application material extruding
container 100 according to the present embodiment, there comes to a
state in which a part of the application material M is flowed out
of the filling area 1x through the hole portion 11e. Accordingly,
as mentioned above, when the piston 7 is assembled in the filling
member 1, the piston 7 is inward inserted and installed to the
filling member 1 while securely discharging the air A between the
application material M and the piston 7 out of the filling area 1x
via the hole portion 11e, for example, until the application
material M is flowed out of the filling area 1x via the hole
portion 11e.
[0101] Therefore, according to the present embodiment, t is
possible to more securely inhibit the air A from standing between
the application material M and the piston 7. As a result, it is
possible to inhibit an internal pressure of the filling area 1x
from being significantly increased due to a temperature change or
the like, and it is possible to prevent the application material M
from leaking out of the discharge port 18a by itself. In
conjunction with this, it is possible to inhibit the air A from
coming to a cushion at the extruding time of the application
material M so as to generate a time lag. Further, the application
material M flowed out of the hole portion 11e can be served as a
lubricating material for the sliding portion such as the threaded
portion 9 within the container 100 by utilizing its oil content.
Further, since an extra application material M is discharged from
the hole portion 11e, it is possible to absorb a filling amount
dispersion of the application material M, and it is possible to
absorb a capacity dispersion in the filling area 1x due to an error
of a container dimension.
[0102] Further, in the present embodiment, as mentioned above, the
opening 11.sub.out of the hole portion 11e is covered with the wall
portion 10x, and is structured such that the application material M
flowed out of the hole port on 11e is guided rearward. Further, the
opening 10.sub.out of the hole portion 10f is covered with the wall
portion 2x, and is structured such that the application material M
flowed out of the hole portion 10f is guided rearward. Therefore,
it is possible to positively and effectively achieve the operation
and effect for functioning the application material M as the
lubricating material for the sliding portion within the container
100.
[0103] Further, as mentioned above, at least a part of the piston 7
positioned at the rearward moving limit is arranged forward in
relation to the rear end E.sub.R of the opening 11.sub.in in the
inner side of the hole portion 11e. Accordingly, when the piston 7
is assembled in the filling member 1, the air A between the
application material M and the piston 7 can be further securely
discharged out of the filling area 1x via the hole portion 11e.
[0104] Further, in the present embodiment, as mentioned above, in
the state in which the piston 7 is positioned at the rearward
moving limit, the convex portion 7c of the piston 7 is arranged
forward beyond the opening 11.sub.in of the hole portion 11e.
Accordingly, it is possible to securely reserve the airtightness of
the filling area 1x. The effect mentioned above is particularly
effective since the volatilization of the application material M
can be preferably suppressed in the case that the application
material M has a volatility like the present embodiment.
[0105] Further, in the present embodiment, as mentioned above, the
front end surface of the piston 7 is formed as the flat surface
shape. Accordingly, it is possible to smoothly circulate the air A
ad the application material M (inhibit the circulation from being
blocked by the shape of the piston 7) at a time when the piston 7
extrudes the air A between the piston 7 and the application
material M, and the application material M out of the hole portion
11e, and it is possible to further securely inhibit the air A from
standing between the application material M and the piston 7.
[0106] Further, in the present embodiment, since the hole portion
11e is formed longer in the axial direction, an allowable range of
the filling amount can be enlarged in the case that the application
material M is filled to the partway of the opening 11.sub.in of the
hole portion 11e in the inner filling tube 11, and it is possible
to easily fill the application material M. In other words, even in
the case that the filling amount of the application material M is
dispersed, the application material M can be securely filled to the
partway of the opening 11.sub.in of the hole portion 11e.
[0107] Further, the application material M like the present
embodiment is generally filled in a jar type glass container and is
used by a cosmetic brush. However, in this case, in a wide mouthed
jar type container, for example, the application material M is
quickly volatilized and the application material M tends to be
changed, and there is a problem that a brush end is solidified and
is hard to be used. In this regard, in the present embodiment,
since the open part is reduced and the application material M can
be doubly or triply sealed and protected by the resin material
having a high barrier performance, the present embodiment is
advantageous in the case that the application material M including
a lot of volatile components is used.
[0108] FIG. 15 is an X-ray photograph showing a part of the
application material extruding container in FIG. 1. As shown in
FIG. 15, in the application material extruding container 100
according to the present embodiment, a part of the application
material M is flowed out of the filling area 1x through the hole
portion 11e, and further reaches the threaded portion 9, in the
initial state in which the piston 7 is positioned at the rearward
moving limit, so that it is possible to confirm that the air A is
securely inhibited from standing between the application material M
and the piston 7.
[0109] In the application material extruding container 100 which is
structured as mentioned above and is in the initial state shown in
FIG. 1, when the cap C1 and the plug C2 are detached by the user,
and the main body tube 2 and the control tube 3 are relatively
rotated in one direction corresponding to the feeding direction,
the moving body 6 and the piston 7 move forward on the basis of the
cooperation of the threaded portion 9 constructed by the female
thread 4e of the threaded tube 4 and the male thread 6b of the
moving body 6, and the rotation preventing portion constructed by
the protruding ridge 3d of the control tube 3 and the protruding
ridge 6c of the moving body 6, whereby the application material M
filled in the filling area 1x of the filling member 1 is discharged
out of the discharge port 18a of the pen tip member 12 (refer to
FIG. 2).
[0110] Further, when the main body tube 2 and the control tube 3
are relatively rotated in one direction as mentioned above, the
ratchet teeth 8b are energized forward in the axial direction on
the basis of the elastic force of the spring portion 5b of the
ratchet member 5. Accordingly, the engagement and the disengagement
(the threadable connection and the threadable disconnection) of the
ratchet teeth 8a and 8b in the ratchet mechanism 8 are repeated. In
other words, the side surfaces 8a1 (refer to FIG. 7) of the ratchet
teeth 8a engage with the side surfaces 8b1 (refer to FIG. 9) of the
ratchet teeth 8b in the rotating direction, and the ratchet teeth
8a slide so as to run up on the side surfaces 8b1 of the ratchet
teeth 8b. Further, after the ratchet teeth 8a go beyond the ratchet
teeth 8b and the engagement is canceled, the side surfaces 8a1
reengage with the side surfaces 8b1 in the rotating direction. As a
result, a click feeling is applied to the user every time the
ratchet teeth 8a and 8b engage and disengage. Here, the click
feeling is generated one time in the case that the main body tube 2
and the control tube 3 are relatively rotated in one direction at
one eighth turn (45 degrees).
[0111] On the other hand, even if the main body 2 and the control
tube 3 are intended to be relatively rotated in the other direction
corresponding to the feed-back direction, the side surfaces 8a2
(refer to FIG. 7) of the ratchet teeth 8a come into contact with
the side surfaces 8b2 (refer to FIG. 9) of the ratchet teeth 8b so
as to be locked in the rotating direction, and the relative
rotation is controlled so that the threaded tube 4 and the ratchet
member 5 do not relatively rotate. As a result, the main body tube
2 and the control tube 3 are not relatively rotated in the other
direction.
[0112] In this connection, as shown in FIGS. 6 and 7, the
application material extruding container 100 is provided with the
cam mechanism 20 mentioned above. The cam mechanism 20 moves
backward the moving body 7 and the piston 7 at a fixed stroke after
moving forward the moving body 6 and the piston 7 at a fixed
stroke, on the basis of the relative rotation at a fixed rotating
amount of the main body tube 2 and the control tube 3 in one
direction. In this case, every time the main body tube 2 and the
control tube 3 are relatively rotated at one eighth turn (every
time the click feeling is generated one time), the moving body 6
and the piston 7 are moved forward at 1.2 mm. The cam mechanism 20
is provided with the protruding portion 20a, and the guide portion
20b which is constructed by the bulge portion 20c and the guide
piece 20d, as mentioned above, the protruding portion 20a is
relatively guided by the guide portion 20b, and the protruding
portion 20a relatively moves along a relative locus extending along
a sine curve.
[0113] The cam mechanism 20 converts a rotating force of the
relative rotation into a linear moving force along the axial
direction every time the main body tube 2 and the control tube 3
are relatively rotated at a fixed rotating amount, thereby moving
forward the moving body 6 and the piston 7 at a fixed stroke.
Specifically, when the main body tube 2 and the control tube 3 are
relatively rotated in one direction, first of all, the protruding
portion 20a relatively moves to one side in the peripheral
direction, and a rear sliding surface 20a2 of the protruding
portion 20a comes into contact with a guide surface 20f of the
guide piece 20d so as to slide. Accordingly, since the guide piece
20d (the threaded tube 4) is movable in the axial direction in
relation to the main body tube 2 and is engaged in the rotating
direction, the guide piece 20d is pushed rearward by the protruding
portion 20a, and the guide piece 20d moves backward. Accordingly,
the threaded tube 4 moves backward, the moving body 6 threadably
engaged with the threaded tube 4 by the threaded portion 9 moves
backward, and the piston 7 further moves backward. As a result, the
filling area 1x is expanded and the internal pressure of the
filling area 1x is automatically depressurized.
[0114] When being relatively rotated in the one direction
continuously, the protruding portion 20a relatively moves
continuously to the one side in the peripheral direction, and the
threaded tube 4, the moving body 6 and the piston 7 move backward
continuously. Further, when the protruding portion 20a relatively
moves to a position where the protruding portion 20a comes into
contact with an edge portion in one side in the peripheral
direction of the guide surface 20f, the sliding motion of the
protruding portion 20a with the guide surface 20f is finished, and
the threaded tube 4, the moving body 6 and the piton 7 reach a
backmost position in the cam mechanism 20. At this time (when
reaching the backmost position of the cam mechanism 20), the
ratchet teeth 8a climbs over the ratchet teeth 8b, and the ratchet
teeth 8a and 8b are disengaged and engaged, whereby the click
feeling is generated (refer to FIG. 1).
[0115] Further, when being relatively rotated in the one direction
continuously, the protruding portion 20a relatively moves to the
one side in the peripheral direction, and the front sliding surface
20a1 of the protruding portion 20a comes into contact with the
guide surface 20e of the bulge portion 20c so as to slide.
Accordingly, the bulge portion 20c is pushed forward by the
protruding portion 20a, and the bulge portion 20c moves forward.
Accordingly, the threaded tube 4 moves forward, and the moving body
6 and the piston 7 move forward. As a result, the filling area 1x
is contracted, and the application material M within the filling
area 1x is extruded so as to be discharged out of the discharge
port 18a.
[0116] When being relatively rotated in the one direction further
continuously, the protruding portion 20a further relatively moves
to the one side in the peripheral direction continuously, and the
threaded tube 4, the moving body 6 and the piston 7 move forward
continuously. Further, when the protruding portion 20a relatively
moves to a position where the protruding portion 20a comes into
contact with an edge portion in one side in the peripheral
direction of the guide surface 20e, the sliding motion of the
protruding portion 20a with the guide surface 20e is finished, and
the threaded tube 4, the moving body 6 and the piston 7 reaches a
most forward moving position in the cam mechanism 20. As mentioned
above, the moving body 6 and the piston 7 are moved backward at the
fixed stroke.
[0117] Accordingly, in the application material extruding container
100 according to the present embodiment, in addition to the
operations and effects mentioned above, the following operations
and effects can be further achieved. In other words, the inner side
of the filling area 1x can be automatically depressurized as well
as the application material M is discharged, by relatively rotating
the main body tube 2 and the control tube 3 at the fixed rotating
amount in the one direction and moving forward the moving body 6
and the piston 7 at the fixed stroke by the cam mechanism 20. Since
the inner side of the filling area 1x can be automatically
depressurized as mentioned above, it is possible to easily and
securely inhibit the application material M from leaking, that is,
inhibit the application material M from drooping from the discharge
port 18a, for example, due to passage of time. Further, it is
possible to inhibit the application material M from being changed
by the pressure.
[0118] Particularly, in the present embodiment, the cam mechanism
20 can move forward and backward the moving body 6 and the piston 7
only by the rotating force of the relative rotation, without
depending on the energizing force of the elastic body such as the
spring or the like. Since the energizing force of the elastic body
may be insufficient in comparison with the force necessary for
moving forward and backward the moving body 6 and the piston 7, it
is possible to further securely inhibit the application material M
from leaking, according to the present embodiment mentioned above.
Further, since the piston 7 defining the filling area 1x can be
moved forward and backward by the cam mechanism 20, it is possible
to directly and preferably depressurize the filling area 1x.
[0119] Further, in the present embodiment, as mentioned above,
every time the click feeling is generated one time by the relative
rotation of the main body tube 2 and the control tube 3, the moving
body 6 and the piston 7 move forward and backward at the fixed
stroke. Accordingly, as well as making the user feel a degree of
the relative rotation and a discharge degree of the application
material M on the basis of the click feeling, it is possible to
make the user feel the forward and backward movement at the fixed
stroke of the moving body 6 and the piston 7.
[0120] Further, according to the present embodiment, as mentioned
above, the relative rotation of the main body tube 2 and the
control tube 3 in the other direction can be controlled by the
ratchet mechanism 8, and only the relative rotation of the main
body tube 2 and the control tube 3 in the one direction can be
allowed by the ratchet mechanism 8.
[0121] Further, in the present embodiment, as mentioned above, when
the click feeling is generated, the threaded tube 4 is positioned
at the rearmost position of the cam mechanism 20, and the inner
side of the filling area 1x is depressurized to the maximum.
Accordingly, since the user generally stops the relative rotation
(finishes the use) on the basis of the click feeling, the
application material extruding container 100 after being used tends
to be set to a state in which the filling area 1x is depressurized.
In this regard, under an actual condition that the application
material M particularly tends to leak out of the discharge port 18a
at a storage time after using, the present embodiment which can
depressurize the filling area 1x of the used application material
extruding container 100 to the maximum is advantageous.
[0122] In the present embodiment, the inner filling tube 11 may be
made transparent, and a window may be formed in a part (a position
which can view the piston 7 at a time when the piston 7 is
positioned at the position shown in FIG. 2 corresponding to the
forward moving limit of the moving body 6) of the outer filling
tube 10. In this case, the color tone and existence of the filled
application material M can be confirmed by detaching the cap C1 at
a selling time or a using time. For example, in the case that the
piston 7 is formed by a white color, the color viewed from the
window changes from the color of the application material M to the
white color when the application material M is extruded to the end
and the piston 7 reaches the position of the window formed in the
outer filling tube 10. Therefore, no remaining amount can be
recognized, and the end of use is signed.
[0123] As mentioned above, the description is given of the
preferable embodiments according to the present invention, however,
the present invention is not limited to the embodiments mentioned
above, but can be modified within a range which does not deflect
from the scope described in each of the claims, or can be applied
to the other structures.
[0124] For example, in the embodiment mentioned above, a pair of
oval hole portions 11e are provided as the passage portion,
however, the passage portion may be formed as a circular
(completely circular) shape or a polygonal shape, and one or three
or more passage portions may be provided. Further, the passage
portion is not limited to the hole portion which passes through the
peripheral wall of the inner filling tube 11, but may be
constructed by a groove portion 11e concave portion) which is
formed in the inner peripheral surface of the inner filling tube 11
and extends so as to be open to the rear end surface of the inner
filling tube 11, for example, as shown in FIG. 16. In this case, a
bottom surface of the groove portion 11e' can achieve the function
provided by the wall portion 10x (that is, the function of guiding
the application material M rearward). Further, the passage portion
may be structured such as to include the hole portion and the
groove portion.
[0125] Further, in the embodiment mentioned above, the application
material M is filled to the partway of the opening 11.sub.in of the
hole portion 11e within the inner filling tube 11, however, the
filling material M may be filled to a rear side beyond the opening
11.sub.in of the hole portion 11e in the inner filling tube 11
without being limited to this, or the filling material M may be
filled to a front side which does not reach the opening
11.sub.in.
[0126] Further, in the embodiment mentioned above, the extruding
mechanism employs the rotary type by the threaded portion 9,
however, can employ a mechanical extruding mechanism, for example,
a knocking type, and a squeeze type extruding mechanism without
being limited to this. Further, in the embodiment mentioned above,
the extruding portion employs the piston 7 having the flat shaped
front end surface, however, may employ a bell-shaped piston which
is tapered toward a front side, and can employ various extruding
portions. Further, in the embodiment mentioned above, the cam
mechanism 20 employs the cylindrical cam mechanism, however, can of
course employ the other cam mechanisms.
[0127] Further, the male thread and the female thread mentioned
above, may work in the same manner as a screw thread and a screw
groove like intermittently arranged projection groups or spirally
and intermittently arranged projection groups, in addition to the
screw thread and the screw groove. Further, in the present
embodiment, the spring portion 5b is integrally provided with the
ratchet member 5, however, the spring portion 5b may be provided
separately from the ratchet member 5. In the above, the ratchet
mechanism 8 doubles as the click mechanism, and the ratchet teeth
8a and 8b correspond to a pair of click projections (click
teeth).
[0128] Further, in the embodiment mentioned above, the description
is given of the present invention as the application material
extruding container 100, however, the present invention can be
comprehended as a manufacturing method for manufacturing the
application material extruding container 100. Further, in the
embodiment mentioned above, there can be included further a step of
moving (approaching) the application material M within the filling
area 1x rearward so that the air A does not stand between the
application material M and the piston 7, by pressurizing or
mechanically extruding rearward the discharge port 18a side of the
filling area 1x, after filling the application material M and
before installing the piston 7 (after the application material
filling step and before the extruding portion installing step).
EFFECT OF THE INVENTION
[0129] According to the present invention, there can be provided
the application material extruding container which can more
securely inhibit the air from standing between the application
material and the extruding portion.
* * * * *